Question

Hank is currently reading a book that is 250 pages long. if he can read 10 pages every 15 minutes, how many hours will it take him to read the book?

Answer 1

The answer is B, 2.78 hours

Explanation:

Answer 2

6 hours 15 minutes, or 6.25 hours

Explanation:

We assume Hank reads at a constant rate. His reading time will be proportional to the number of pages.

Proportion

We know that 15 minutes is 1/4 hour, so the proportion can be written ...

hours/pages = (book hours)/(250 pages) = (1/4 hour)/(10 pages)

Multiplying by 250 pages gives ...

book hours = 250(1/4 hour)/10 = 25/4 hour = 6 1/4 hour

It will take Hank 6 1/4 hours to read the book.